Well! today is another important day in the history of world of internet. It’s time to say adios to IPv4 (xxx.xx.xxx.xx). Today several of internet companies are making test for IPv6, Internet protocol version 6, compatibility. With the ever-increasing websites the IPv4 shall exhaust by the end of 2011.

Think of it this way: When a telephone company runs of out of digits, it adds one more number. The same rule applies to Internet.

Some popular websites like Google & Facebook, claim that few of their users will have problem logging.

Facebook said the adoption of IPv6 had become a “classic chicken-and-egg puzzle”. “Websites don’t want to enable IPv6 because a small number of their users may have trouble connecting,” it said.

“At the same time, doing nothing means that ever more users will have trouble connecting,” said Facebook.